Loom-shuttle.



UNTTED STATES PATENT OFFICE.

JOSEPH LACROIX AND JOHN V. CUNNIFF, OF FALL RIVER, MASSAOHUSETT S.

LOOIVl-SHUTTLE.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed June 28,1906. Serial No. 323,841.

. the shuttle by hand, without suction.

A further object of our invention is to construct a threading device for loom shuttles so that, when threaded, the thread is positively locked in the device, thereby preventing the thread from flying out at either the throat or delivery eye of the shuttle.

A still further object of our invention is to construct a threading device for loom shuttles so that the shuttle cannot be improperly threaded.

Our invention consists in the peculiar and novel construction of a mechanical threading device for loom shuttles and the adjacent portions of the shuttle, as will be more fully set forth hereinafter and claimed.

Figure 1 is a top plan view of the thread delivery end of the loom shuttle provided with our improved threading device. Fig. 2 is a side view of Fig. 1 looking at the delivery eye of the shuttle. Fig. 3 is an enlarged detail sectional view taken on line 3 3 of Fig. 2, showing the thread extending partly around the threading device and out through the delivery eye. Fig. 4 is an enlarged transverse sectional view taken on line 4 4 of Fig. 1, showing the threading device in the closed or locked position, and Fig. 5 is a transverse sectional view similar to Fig. 4, showing the threading device in the open position to receive the thread.

In the drawings, (1 indicates the thread delivery end of a loom shuttle, b the nose end portion of a bobbin in the shuttle, c a weft thread, and d our imprd 'ved threading device.

The shuttle a has a longitudinal dished depression 6 in the top merging into the bob- 1 bin cavity and having the semi-circular end i l l 7 toward the point of the shuttle, a circular chamber 8 concentric with the semi-circular end 7 and extending downward below the plane of the delivery eye of the shuttle, a smaller concentric screw-threaded hole 9 through the bottom of the chamber 8, a concentric circular recess 10 in the bottom of the shuttle, a circular hole 11 leading centrally from the bobbin cavity to the chamber .8 forming the throat, a slit 12 extending centrally downward from the depression 6 in the top of the shuttle through to the hole 11, a circular hole 13 leading inward at an angle from the side of the shuttle to the chamber 8 on a plane with the hole 11 and forming the delivery eye 14 of the shuttle and a slit 15 extending from the hole 13 upward through the top of the shuttle and from the side of the shuttle through to the chamber 8, otherwise the shuttle may have the construction of any of the well-known forms of loom shuttles.

Our improved threading device (1 consists of a round hollow concave post 16 having a central hole 17 in the top forming the internal annular shoulder 18, a reduced screwthreaded open lower end 19 adapted to screw into the screw-threaded hole 9 in the bottom' of the chamber 8 and forming the annular shoulder 20, a vertical lug 21 on the side of the post adapted to bear on the wall of the chamber 8 intermediate the holes 11 and 14, as shown in Fig. a circular cap 22 slightly larger than the chamber 8 and having a smooth slightly convex top, a beveled edge 23 adapted to fit in the depression 6 in the top of the shuttle, a downwardly-extending annular lip 24 adapted to have a sliding fit over the upper end of the post 16 and to form an annular space 25 between the lip 24 and the wall of the chamber 8, and a central stem 26 having the screw-threaded lower end 27 and adapted to extend downward from the cap through the hole 17 in the top of the post 16, a nut button 28 secured by screwing the same onto the end 27 of the stem in the recess 10 in the bottom of the shuttle and a coiled.

spring 29 surrounding the stem in the post and engaging with the internal annular shoulder 18 in the post and the nut button 28 on the stem, as shown in Fig. 5.

In the operation of my improved threading device the shuttle is held. in the left hand with the thumb on the button 28, the cap 22 is raised into the position as shown in Fig. 5 against the tension of the coiled spring 29 by a pressure of the thumb on the button 28, and the thread 0 passed to the right around the cap under the beveled edge 2;), and then down simultaneously through the annular space 25, the slit into the hole' 13, the slit 12 into the hole 11 and out through the delivery eye 14, when the pressure 01" the thumb on the button is removed and the cap resumes automatically its normal or locked position through the tension of the spring. The thread now leads from the bobbin 1) through the hole 11 or throat partly around the post 16 and out through the hole 13 and the delivery eye 14 of the shuttle, as shown in Figs. 1 and 3. The thread is prevented from jumping out of the threading device first by the annular lip 24 and then by the beveled edge 23 on the cap. In threading the shuttle the thread would materially be carried to the right around the cap 22 to bring the thread around the post 16, as shown in Figs. 3 and 4. If the thread should be passed to the left the lug 21 would prevent the thread from entering the hole 1 1 or throat of the shuttle, thereby indicating that the shuttle was improperly threaded. In practice we find that the friction of the thread around the post 16 of the threading device gives the necessary amount 'oftension on the thread, also the post presenting a smooth round surface to the thread eliminates the liability of the thread breaking, when the shuttle is in operation.

By this construction we provide a loom shuttle with a strong and durable hand threading device giving the same action when the shuttle is in operation as the older forms of shuttle, where the thread is drawn through the eye of the shuttle by suction, which can be threaded easily and quickly without failure and which having few parts is not liable to get out of order or wear, the only part liable to wear being the post 16 which if worn may be renewed at a nominal expense.

Having thus described our invention, we claim as new and desire to secure by Letters Patent;-

1. In a loom shuttle, a shuttle body having a dished depression in the top, a circular chamber extending down from the depres- 'sion, intersecting the hole forming the throat and the hole forming the eye of the shuttle, and slits extending down from the depres sion and the top of the shuttle to the holes forming the throat a fixed circular post in the chamber, a cap adapted to fit in the depression in the top of the shuttle and close the open end of the chamber, means for holding the cap in the and eye of the shuttle,

closed position under spring tension, and means by which the cap maybe raised against the spring tension.

2. In a loom shuttle, a dished depression in the t p, a circular chamber extending down from the depression, a hole leading from the bobbin cavity into the chamber, a hole leading from the side of the shuttle into the chamber and forming the eye of the shuttle, and slits extending from the depression and the top of the shuttle to the holes leading from the bobbin cavity and the side of the shuttle, a fixed round hollow post in the chamber having a screw threaded lower end, a cap adapted to fit in the depression in the top of the shuttle and close the open upper end of the chamber, a stem on' thecap adapted to extend down through the post, a button on the end of the, stem in the recess in the bottom of the shuttle, and a coiled spring surrounding the stem in the post, whereby the cap is held in the closed position under spring tension and may be raised by an upward pressure on the button to thread the shuttle, as described.

3. In. a shuttle, a shuttle body having a circular chamber connected with the bobbin cavity and the shuttle eye, a fixed circular post in said circular chamber, a cap adapted to close the open end of the chamber, means for holding the cap yieldingly in the closed position under spring tension, and means by which the cap may be raised. against said spring tension.

4. In a loom shuttle a hand threading de' vice (Z comprising a round hollow concave post 16 having a central hole 17 in the top forming an internal annular shoulder 18, a reduced screw-threaded lower end 19 forming an annular shoulder 20, a vertical lug 21 on the side'of the post, a circular cap 22 larger than the chamber 8 and having a slightly convex top, a beveled edge 23 adapted to fit in the depression 6 in the top of the shuttle, a downwardly-extending annular lip 24 adapted to have a sliding fit over the upper end of the post 16, and a central stem 26 having a screw-threaded lower end 27, a nut button 28 on the end 27 of the stem, and a coiled spring 29 surrounding the stem 26 in the post 16 and adapted to engage with the shoulder 18 in the post and the button 28 on the stem, for the purpose as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

JOSEPH LAOROIX. JOHN V. CUNNIFF. Witnesses ADA E. IIAGERTY, J. A. MILLER.

a shuttle body having ICC 

